unity - Can't recover my desktop environment

Good evening Everyone, I am having problems recovering my desktop.

Before it came to this desktop without the taskbar at the top, and the sidebar. Also the title bar for applications are gone.

What happened is I tried to installed my NVIDIA driver without using the AdditionalDrivers application, but using the terminal.

1. I downloaded the installer for my NVIDIA driver


2. Followed the instructions, which was first to disable the X server, I did it by changing the run-level.
   
   

   
   

   vim /etc/init/rc-sysinit.conf
   
   
   changed the value of "env DEFAULT_RUNLEVEL = 2" to 3

   
   



3. Next was I disable the Nouveau Driver by adding this lines.
   
   

   
   

   
   

   blacklist nouveau
   options nouveau modeset=0

   to the following file:
   /etc/modprobe.d/blacklist.conf using vim

   
   

   
   

After that everything went wrong, my desktop did not went the way things I thought it would be so, I decided to uninstall the driver and undo the changes I did.. and this happened..

The reason why I tried to install the driver: because my systems keeps on saying my graphics driver is not well configured that I had to run on low graphics mode for one session even if it won't be just once. and also it keeps giving errors that my graphics is not well installed. hmp..

Before everything else, my desktop was fine. I was looking for some ways to reset the default desktop unity which was

unity reset

but it gives out an error that the reset command was already deprecated and so I came to my last resort on posting a question in this forum so I can find a solution on how to fix my desktop environment.

I'm using the Ubuntu 12.10 Desktop version btw.

I can't run the unity command in the terminal. It gives out errors that the process is not found and all the things that it is loading goes for an error and nothing.

If definitely by chance I get things done and found the solution, I'll post it.